Method of canning and can.



- F. P. NICCOLL 6L W. W.V WILLISON. METHOD 0F CANNING AND CAN. APPucA'UoN min Nov. 2s, 1917.

l $921, )l 89., Patented Apr. 29, 1919.

" 'man TiAns PATENT crimen.

TnAn-cis iaincconr., or 'nIDCnWOon NEW Jansma', Ann WALTER WILLIAM WILLIsoN, v or NEW YORK, It. Y., Assrenoias TO THERMOKETT PRODUCTS CORPORATION, OT

l Naw, Tonk, N. T., A CORPORATION or MAINE. l

.. recense.

METHOD 0l? CANTNG AND CAN'.

original application led September 1, 1917, Serial No. 189,292.

Specification of Letters Patent.

Patented Apr. 29, 1919.

Divided and this application filed Novem- Jber 2S, 1917. Serial No. 204,323.

To allwhomit may concern:

Be it known. that we, FRANCIS l?. MCCOLL, a citizen of Canada, and a resident of Ridgewood,inthe county of Bergen and State of New Jersey, and WALTER WILLIAM WILLI- soN, a citizen of the United States, and a resident of New York, in the-county ofNew York and State of NewYork, have jointly invented a certain new and useful Method of Canning and Can, of which the following is a specification. -v

This application is a division of our copending application SenlNo. 189,292.

Our invention relates to a method of preserving food, by what is commonly called canning, and, also to a can used in our method.

@ur inventionl further relates to certain details ofthe-process, and to certain details of the can' which will be morelfully hereinafter described and ,pointed out in the claims. l

Tn the accompanying drawing the same reference numerals refer to similar parts inthe several guress :Figure 1 is a vertical sectionalview of the inner container. ,A

Fig. 2 is aperspective view of the cap or cover to be used with the inner container i .shown in Fig. 1. '5

Fig 3 is a sectional view of the metal cap to be used with the outer container. showing it before it has beendished.

Fig.l 4 is a vertical section of the outer cap, similar to Fig. 3showing the cap detached from the outer container and dished.

Fig. 5v is a vertical section through our` complete can showing the inner and outer containers, and the openi-n s in the inner container sealed by thedishing of the metal cap which also prevents relative movement between the inner and outer containers.

l Tn canning manyA articles it is desirable to keep them from coming in contact with the outer container which is usually a tin can.

When the article canned does, in the method of canning now generally in use, come in article which-has a tendency to deteriorate due to chemical reaction. p

By our invention we prevent the article canned `from coming into direct Contact with the' outer tin can.- 'This insures that the canned article will retain its original delicacy of flavor and its own color, and will titi not be chemically acted upon by the metal This outermetallic container or tin can has a metal cap 5 which has a portion which is normally convex as shown at 6 Fig. 3.

@ur invention is particularly applicable to the vacuum canning process in which the air is exhausted from the can before it is sealed. The cap -5 is sealed on the tin can l in the ordinary vacuum canning machine (not shown), now well known in the art.

To insure that all the air will be exhausted from the interior of the inner container 2, as well, as from the metallic container 1, we provide one or more minute apertures or holes 4, 4 usually in the form of pin holes. When the cap 5 is sealed on the can 1 in the vacuum canning machine, that machine will exhaust the air from the outer can 1 and also from the interior of the non metallic inner container 2, the air passing ou-t through the .apertures 4, 4. 'l

Immediately after the sealing of this cap 5 the vacuum in the canning machine, so far as this can is concerned,`is broken. The moment that this occurs, in the passage of the can through the machine, the ordinary atmospheric pressure will dish the cap 5 and making it concave as Vvshown at I in Figs. 4

land 5. This will automatically close the apertures 4,4 and prevent any of the contents of theinner receptacle 2 working out of the inner container, into the space between .the inner and outer containers. At the same time, it will exert considerable' pressure upon the inner container 2 and prevent any relative movement between the inner container 2 and the outer can l.

We havedescribed our Inventlon'in con-1 nection`"with an embodiment thereof to which We do not desire to be limited, for what is claimed as new and What/is desired to secure by Letters Patent is set forth in the appended claims.

What We claim as our invention and 'desire to secure by Letters Patent is 1. Themethod of cannin consisting in placing the alimentary su stance to be canned in an inner container, placing said inner container, in an outer container, placing a cap onouter container and creating a vacuum Within said container whereby when exposed to atmospheric pressure the cap will i'dish so as to bear on the inner container to prevent movement of said inner container Within the outer container.

2. rlFhe method of canning consisting in placing thev alimentary substance to be lcanned in an inner container -having one or more openings, placing said inner container in an outer container, placing a cap on outer container and creating a vacuum Within said containerwhereby When exposed to atmospheric pressure l the cap Will dish so as to bear on the inner container and seal said openings and prevent movement 'placing the alimentary ,substance to be canned in an inner non metallic container, placing said inner non metallic container in an outer metal container, placing a cap on outer metal container and creating a vacuum Within said metal container Whereby when exposed to atmospheric pressure the metal cap will dish so as to bear on the inner non metallic container to prevent movement of said'non metallic inner container Within theouter metal container. I.

4. The method of canning consisting in placing the alimentary substance to beA Witnesses:

. CHRYSTINE GLASER,

JAMES F; KELLr. 

